CN215976869U

CN215976869U - High-pier long-span continuous rigid frame 0# block bracket pre-pressing device

Info

Publication number: CN215976869U
Application number: CN202122153535.0U
Authority: CN
Inventors: 付凯歌; 周斌斌; 王文涛; 郭雷刚; 李璞; 付建曲; 许�鹏
Original assignee: CCCC SHB Fifth Engineering Co Ltd
Current assignee: CCCC SHB Fifth Engineering Co Ltd
Priority date: 2021-09-07
Filing date: 2021-09-07
Publication date: 2022-03-08
Anticipated expiration: 2031-09-07

Abstract

The utility model relates to a continuous rigid frame 0# piece bracket pre-compaction device of high mound long span belongs to bridge 0# piece pre-compaction structure field, the setting is in pier shaft top, the pier shaft includes first pier shaft and second pier shaft, be equipped with the link between first pier shaft and the second pier shaft, one side that first pier shaft and second pier shaft kept away from each other is connected with the bracket, bracket and link top all are connected with supporting component and stretch-draw subassembly, the one end fixedly connected with cushion cap of bracket is kept away from to the pier shaft, the stretch-draw subassembly is equipped with a plurality ofly and evenly distributed in the top of link and bracket. This application has the simple convenient effect of pre-compaction process that makes continuous beam bridge 0# piece bracket.

Description

High-pier long-span continuous rigid frame 0# block bracket pre-pressing device

Technical Field

The application relates to the field of a 0# block prepressing structure of a bridge, in particular to a 0# block bracket prepressing device of a high-pier long-span continuous rigid frame.

Background

The continuous beam pier 0# block is a foundation for later-stage cantilever construction of the upper portion of a bridge, and is formed by casting large-volume concrete in situ, so that the bearing capacity of the bracket is critical, and after the bracket is installed, the bracket must be pre-pressed, the bearing capacity and stability of the bracket are improved, meanwhile, the inelastic deformation of the bracket is eliminated, the elastic deformation and the inelastic deformation of the bracket are obtained, and a basis is provided for setting the pre-camber of a bottom die of a box girder.

At present, common prepressing modes of a 0# block bracket of a continuous beam bridge comprise sand bag preloading, concrete block preloading, steel bar preloading, profile steel preloading, water bag preloading and the like, and a large amount of prepressing materials need to be hoisted above the bracket according to prepressing grading loading in the construction process.

In view of the above-mentioned related art, the inventor thinks that hoisting a large amount of pre-compaction materials above the bracket is time-consuming and labor-consuming, and affects the construction progress.

SUMMERY OF THE UTILITY MODEL

In order to make the pre-compaction process of continuous beam bridge 0# piece bracket simple convenient, this application provides a continuous rigid frame 0# piece bracket pre-compaction device of high mound long span.

The application provides a pair of 0# piece bracket pre-compaction device of continuous rigid frame of high mound long span adopts following technical scheme:

the utility model provides a high mound is big strides 0# piece bracket pre-compaction device of footpath in succession, the setting is in pier shaft top, the pier shaft includes first pier shaft and second pier shaft, be equipped with the link between first pier shaft and the second pier shaft, one side that first pier shaft and second pier shaft kept away from each other is connected with the bracket, bracket and link top all are connected with supporting component and stretch-draw subassembly, the one end fixedly connected with cushion cap of bracket is kept away from to the pier shaft, stretch-draw subassembly is equipped with a plurality ofly and distributes in the top of link and bracket, the stiff end and the cushion cap fixed connection of stretch-draw subassembly, the expansion end of stretch-draw subassembly can be fixed after passing supporting component.

Through adopting above-mentioned technical scheme, set up the link between first pier shaft and second pier shaft, help making firm in connection between first pier shaft and the second pier shaft to guarantee pre-compaction system overall stability. In the process; during prepressing, a plurality of tensioning assemblies simultaneously prepress the bracket system, so that the prepressing efficiency is improved; a large amount of prepressing materials are not required to be hoisted in the prepressing process, and the prepressing mode is simple and convenient.

Optionally, the tensioning assembly comprises a first fixing piece, a traction rope, a second fixing piece and a piercing jack, one end of the traction rope is fixedly connected with the bearing platform through the first fixing piece, the other end of the traction rope is connected with the supporting assembly through the second fixing piece, the piercing jack is fixedly connected with the supporting assembly, the traction rope is slidably connected with the second fixing piece along the length direction of the traction rope, and one end, far away from the bearing platform, of the traction rope is fixedly connected with the piercing jack.

Through adopting above-mentioned technical scheme, after fixing tensioning assembly through first mounting and second mounting, through the hierarchical stretch-draw tractive rope of punching jack, can reach the purpose of pre-compaction bracket, it is simple convenient.

Optionally, the first fixing part comprises a first anchor and a connecting rod, the connecting rod is provided with a plurality of anchors and is distributed on the periphery of the first anchor, the connecting rod is fixedly connected with the first anchor, and the end part of the connecting rod is fixedly connected with the bearing platform.

Through adopting above-mentioned technical scheme, the tractive rope is fixed through first ground tackle, and is simple convenient, and can make the tractive rope fixed firm, makes the difficult slippage of tractive rope in the use.

Optionally, the connecting rod is preset in the bearing platform.

By adopting the technical scheme, the first fixing piece can be conveniently and fixedly preset, so that the fixed end of the traction rope can be conveniently fixed; secondly, the connecting rod is preset in the cushion cap, so that the stability of the connecting rod can be greatly improved, the first fixing piece is firm, the fixed end of the traction rope is fixed all the time, and smooth prepressing is facilitated.

Optionally, the first fixing member further includes a reinforcing rod, and the reinforcing rod is provided in plurality and connected between adjacent connecting rods.

Through adopting above-mentioned technical scheme, further improve the fastness of connecting rod, make the stiff end of tractive rope firmly fixed.

Optionally, the link includes connecting rod and beam brace, and the beam brace is equipped with two and is connected with the both ends of connecting rod, and the beam brace includes fixed plate and the connecting plate that is used for placing supporting component, and one side and first pier shaft or second pier shaft fixed connection that the connecting rod was kept away from to the fixed plate, connecting plate and fixed plate fixed connection, two connecting plates are close to each other, and the lateral wall fixed connection of fixed plate is kept away from to connecting rod and connecting plate.

Through adopting above-mentioned technical scheme, the connecting rod can make firm in connection between first pier shaft and the second pier shaft, and the beam holds in the palm both can make the connecting rod firmly connect on the pier shaft, can make supporting component firmly fixed again, and then makes whole pier shaft not fragile at bracket pre-compaction in-process.

Optionally, the support assembly includes a cross beam and a reaction beam, the cross beam is fixedly connected to the bracket or the connecting plate, the reaction beam is located above the cross beam and is fixedly connected to the cross beam, and an included angle exists between the length direction of the cross beam and the length direction of the reaction beam.

By adopting the technical scheme, the cross beam and the reaction beam are beneficial to transmitting the pre-pressure to the whole bracket and the connecting frame.

Optionally, the bracket includes horizontal part and skew portion, horizontal part and pier shaft fixed connection, the one end and the pier shaft lateral wall fixed connection of skew portion, the other end and horizontal part fixed connection.

Through adopting above-mentioned technical scheme, the diagonal bracing portion plays the slant supporting force to whole bracket, makes the bracket have better stability, and then also helps the connection stability of pier shaft.

To sum up, the application comprises the following beneficial technical effects:

1. the connecting frame is arranged between the first pier body and the second pier body, so that the first pier body and the second pier body are firmly connected, the bracket can be simultaneously pre-pressed through the plurality of tensioning assemblies, the overall stability of a pre-pressing system can be improved, and the bracket can be conveniently pre-pressed;

2. by arranging the supporting component, the supporting component bracket is uniformly stressed, so that the firmness of the bracket is checked;

3. through predetermineeing the connecting rod on the cushion cap, both can be convenient the installation of first ground tackle, can ensure the fastness of first mounting again.

Drawings

FIG. 1 is a schematic perspective view of a high pier large-span continuous rigid frame No. 0 block bracket pre-pressing device according to an embodiment of the application;

FIG. 2 is a left side view of a high pier large span continuous rigid frame 0# block bracket pre-pressing device according to an embodiment of the application;

FIG. 3 is a schematic perspective view of a protruded display connecting frame in a high pier large-span continuous rigid frame No. 0 block bracket pre-pressing device according to an embodiment of the present application;

FIG. 4 is a schematic perspective view of a first fixing member, which is protruded from a high pier long-span continuous rigid frame No. 0 block bracket pre-pressing device according to an embodiment of the present application;

fig. 5 is a schematic perspective view illustrating a second fixing member highlighted in a high-pier large-span continuous rigid frame # 0 block bracket pre-pressing device according to an embodiment of the present application.

Description of reference numerals: 1. a support assembly; 11. a cross beam; 12. a counter-force beam; 2. a tensioning assembly; 21. a first fixing member; 211. a first anchor; 212. a connecting rod; 213. a reinforcing rod; 22. a pulling rope; 23. a second fixing member; 231. stretching a stirrup; 2311. a support bar; 2312. a support plate; 232. a second anchor; 24. a center-penetrating jack; 3. a pier body; 31. a first pier body; 32. a second pier body; 4. a bracket; 41. a horizontal portion; 42. a diagonal portion; 5. a bearing platform; 6. a connecting frame; 61. a connecting rod; 62. a beam support; 621. a fixing plate; 622. a connecting plate; 623. a reinforcing plate.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses a high-pier long-span continuous rigid frame 0# block bracket pre-pressing device. Referring to fig. 1 and 2, pre-compaction device sets up in pier shaft 3's top, and pier shaft 3 is two thin wall mounds, and pier shaft 3 includes first pier shaft 31 and second pier shaft 32, is equipped with link 6 between first pier shaft 31 and the second pier shaft 32, and one side that first pier shaft 31 and second pier shaft 32 kept away from each other all is connected with bracket 4 along the bridge outside promptly, and bracket 4 and link 6 top all are connected with supporting component 1 and stretch-draw subassembly 2, and the equal concrete placement of one end that bracket 4 was kept away from to first pier shaft 31 and second pier shaft 32 has cushion cap 5. The supporting assembly 1 is located above the bracket 4 and the connecting frame 6 and connected with the bracket 4 and the connecting frame 6, and the tensioning assemblies 2 are arranged above the connecting frame 6 between the piers and the bracket 4 outside the piers according to the stress characteristics of the bracket 4. The fixed end of the tensioning component 2 is fixedly connected with the bearing platform 5, and the movable end of the tensioning component 2 can be fixed after penetrating through the supporting component 1.

After the supporting component 1 and the tensioning component 2 are installed, the traction rope 22 is tensioned in a grading mode through the tensioning component 2 and kept for a proper time, the purpose of a pre-pressing support system is achieved, the traditional modes of hoisting a large amount of pre-pressing materials and the like are not needed, and the pre-pressing mode is simple and convenient. In the pre-pressing process, the connecting frame 6 helps to ensure firm connection between the first pier body 31 and the second pier body 32, and ensures the overall stability of the pre-pressing system.

Referring to fig. 2, the distance between first pier body 31 and second pier body 32 is 3.4m, and bracket 4 includes horizontal part 41 and diagonal portion 42, and horizontal part 41 is through presetting the lateral wall that screw fixed connection kept away from each other at first pier body 31 and second pier body 32, and the one end of diagonal portion 42 and the lateral wall of first pier body 31 and second pier body 32 are through presetting screw fixed connection, and the other end is fixed with the diapire welded of horizontal part 41. The inclined support portion 42 provides an inclined support force for the horizontal portion 41, so that the bracket 4 has better stability, and the first pier body 31 and the second pier body 32 are not easily damaged.

Referring to fig. 2 and 3, the connecting frame 6 includes a connecting rod 61 and a beam support 62, the beam support 62 is provided with two ends located at the length direction of the connecting rod 61, the beam support 62 includes a fixing plate 621, a connecting plate 622 and a reinforcing plate 623, the fixing plate 621 is perpendicular to the connecting plate 622, the side wall of the fixing plate 621 and the side wall of the first pier body 31 and the second pier body 32 close to each other are welded and fixed by a preset bolt, and the connecting plate 622 and the side wall of the two fixing plates 621 close to each other are welded. Two reinforcing plates 623 are arranged and are parallel to each other, the reinforcing plates 623 are welded on the bottom wall of the connecting plate 622, and the side wall of the reinforcing plates 623 far away from the fixing plate 621 is flush with the side wall of the connecting plate 622 far away from the fixing plate 621. The support member 1 is spot-welded to the top wall of the connecting plate 622, and the connecting rod 61 is welded to the side wall of the reinforcing plate 623 remote from the fixing plate 621 and the side wall of the connecting plate 622 remote from the fixing plate 621. Connecting rod 61 enables first pier body 31 and second pier body 32 to be firmly connected, and then ensures the overall stability of the pre-pressing system.

Referring to fig. 2, the support assembly 1 includes a cross beam 11 and a reaction beam 12, the cross beam 11 is located above the horizontal portion 41 or the connecting plate 622 and welded to the horizontal portion 41 or the connecting plate 622, the longitudinal direction of the cross beam 11 is perpendicular to the longitudinal direction of the bracket 4, the reaction beam 12 is located above the cross beam 11 and fixed to the cross beam 11 by spot welding, the longitudinal direction of the cross beam 11 is perpendicular to the longitudinal direction of the reaction beam 12, and a plurality of cross beams 11 and a plurality of reaction beams 12 are provided. The cross beams 11 and the reaction beams 12 are staggered with each other to form a firm support frame, so that the stress condition of the bracket 4 in the casting process of the 0# block can be better simulated.

Referring to fig. 1, the tensioning assembly 2 includes a first fixing member 21, a pulling rope 22, a second fixing member 23 and a penetrating jack 24, the first fixing member 21 is connected to the bearing platform 5, the second fixing member 23 is connected to the reaction beam 12, the pulling rope 22 is a plurality of steel strands, a fixing end of the pulling rope 22 is fixedly connected to the bearing platform 5 through the first fixing member 21, and the pulling rope 22 sequentially penetrates through the cross beam 11, the reaction beam 12 and the second fixing member 23 and then is fixedly connected to the penetrating jack 24. After the supporting assembly 1 and the tensioning assembly 2 are installed, the movable end of the pulling rope 22 is tensioned in a grading mode through the piercing jack 24 and kept for a proper time, the purpose of pre-pressing the bracket 4 is achieved, and pre-pressing of a 0# block bracket 4 system is simulated in a mode of tensioning the steel strand through the piercing jack 24, so that the method is simple and convenient.

Referring to fig. 4, the first fixing member 21 includes a first anchor 211, a plurality of connecting rods 212 and reinforcing rods 213, the plurality of connecting rods 212 are vertically arranged and uniformly distributed on an outer circumferential wall of the first anchor 211, a bottom end of each connecting rod 212 is poured inside the bearing platform 5 to form an embedded connecting rod 212, and an end of each connecting rod 212 is connected to the bearing platform 5 in an anchoring manner. The first anchorage devices 211 are horizontally arranged, the peripheral walls of the first anchorage devices 211 are welded with the connecting rods 212, and the traction ropes 22 are fixedly connected with the first anchorage devices 211 and the clamping pieces. The fixed end of the pulling rope 22 is firmly fixed in the first anchorage device 211, so that the process of subsequent pressure application is facilitated, at the moment, the connecting rod 212 is preset in the bearing platform 5, the stability of the connecting rod 212 can be greatly improved, and the connecting firmness of the fixed end of the pulling rope 22 is further improved.

Referring to fig. 5, the second fixing member 23 includes a tension stirrup 231 and a second anchor 232, the tension stirrup 231 includes a support bar 2311 and a support plate 2312, the support bar 2311 is provided with four and vertically welded to the top wall of the reaction beam 12, the support plate 2312 is horizontally placed, and the bottom wall of the support plate 2312 is welded to the top wall of the support bar 2311. The second anchorage device 232 is located between the supporting rods 2311 and welded with the inner side wall of the supporting rods 2311, the shell of the penetrating jack 24 is connected with the top wall of the tensioning stirrup 231 through a bolt, and the traction rope 22 sequentially penetrates through the second anchorage device 232 and the tensioning stirrup 231 and then is fixedly connected with the penetrating jack 24. By connecting the pulling rope 22 with the feedthrough jack 24 after passing through the tension stirrup 231, it is helpful to conveniently secure the movable end of the pulling rope 22 in order to facilitate the subsequent pre-pressing process.

The implementation principle of the 0# block bracket pre-pressing device for the high-pier long-span continuous rigid frame is as follows: the cross beam 11 and the reaction beam 12 are sequentially connected above the bracket 4 and the connecting rod 61, then the tensioning assembly 2 is installed above the reaction beam 12, the traction ropes 22 are simultaneously tensioned in a grading manner through a plurality of penetrating jacks 24, and the corresponding tensioning time is kept, so that the aim of efficiently pre-pressing the bracket 4 is fulfilled; after the pre-pressing is finished, the counter-force beam 12 and the whole tensioning assembly 2 are removed.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a high mound is striden and is striden 0# piece bracket pre-compaction device of footpath in succession, sets up in pier shaft (3) top, its characterized in that: pier shaft (3) are including first pier shaft (31) and second pier shaft (32), be equipped with link (6) between first pier shaft (31) and second pier shaft (32), one side that first pier shaft (31) and second pier shaft (32) kept away from each other is provided with bracket (4), bracket (4) and link (6) top all are connected with supporting component (1) and stretch-draw subassembly (2), the one end fixedly connected with cushion cap (5) of bracket (4) are kept away from in pier shaft (3), stretch-draw subassembly (2) are equipped with a plurality ofly and distribute in the top of link (6) and bracket (4), the stiff end and cushion cap (5) fixed connection of stretch-draw subassembly (2), the expansion end of stretch-draw subassembly (2) can be fixed after passing supporting component (1).

2. The high pier long-span continuous rigid frame 0# block bracket pre-pressing device according to claim 1, characterized in that: tensioning set (2) are including first mounting (21), pulling rope (22), second mounting (23) and punching jack (24), the one end and cushion cap (5) of pulling rope (22) are through first mounting (21) fixed connection, the other end is connected through second mounting (23) with supporting component (1), punching jack (24) and supporting component (1) fixed connection, the length direction and second mounting (23) sliding connection of pulling rope (22) are followed in pulling rope (22), the one end and punching jack (24) fixed connection of cushion cap (5) are kept away from in pulling rope (22).

3. The high pier long-span continuous rigid frame 0# block bracket pre-pressing device according to claim 2, characterized in that: the first fixing piece (21) comprises a first anchor (211) and a connecting rod (212), the connecting rod (212) is provided with a plurality of anchors distributed on the periphery of the first anchor (211), the connecting rod (212) is fixedly connected with the first anchor (211), and the end part of the connecting rod (212) is fixedly connected with the bearing platform (5).

4. The high pier long-span continuous rigid frame 0# block bracket pre-pressing device according to claim 3, characterized in that: the connecting rod (212) is preset in the bearing platform (5).

5. The high pier long-span continuous rigid frame 0# block bracket pre-pressing device according to claim 3, characterized in that: the first fixing member (21) further comprises a reinforcing rod (213), and the reinforcing rod (213) is provided in plurality and connected between the adjacent connecting rods (212).

6. The high pier long-span continuous rigid frame 0# block bracket pre-pressing device according to claim 1, characterized in that: connecting frame (6) include connecting rod (61) and beam brace (62), beam brace (62) are equipped with two and are connected with the both ends of connecting rod (61), beam brace (62) are including fixed plate (621) and connecting plate (622) that are used for placing supporting component (1), one side and first pier shaft (31) or second pier shaft (32) fixed connection of connecting rod (61) are kept away from in fixed plate (621), connecting plate (622) and fixed plate (621) fixed connection, two connecting plates (622) are close to each other, connecting rod (61) and connecting plate (622) keep away from the lateral wall fixed connection of fixed plate (621).

7. The high pier long-span continuous rigid frame 0# block bracket pre-pressing device of claim 6, which is characterized in that: the support assembly (1) comprises a cross beam (11) and a reaction beam (12), the cross beam (11) is fixedly connected with a bracket (4) or a connecting plate (622), the reaction beam (12) is located above the cross beam (11) and is fixedly connected with the cross beam (11), and an included angle exists between the length direction of the cross beam (11) and the length direction of the reaction beam (12).

8. The high pier long-span continuous rigid frame 0# block bracket pre-pressing device according to claim 1, characterized in that: the bracket (4) comprises a horizontal part (41) and an inclined strut part (42), the horizontal part (41) is fixedly connected with the pier body (3), one end of the inclined strut part (42) is fixedly connected with the side wall of the pier body (3), and the other end of the inclined strut part is fixedly connected with the horizontal part (41).